Septic sewer system.



N0. 778,506. PATENTED DEG. 27, 1994. W. A. REID vE. J. HANLEY. SEPTIG SEWER SYSTEM.

APPLICATION FILM) JULY 2a, 1904.

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ATEST No. 778,506. l PATENTED DEC. 27, 1904. W. A. REID @L E. J. HANLEY.

SEPTIGSEWER SYSTEM.

APPLICATION FILED JULY 23, 1904.

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No. 778,506. PATENTED DEG. 27, 1904. 77. A. EEID @L E. J. EANLEY.

SEPEIG SEWER SYSTEM.

APPLICATION FILED JULY 23, 1904.

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1 l v am@ 9 Z2/sf UNITED STATES Patented December 27, 1904-..

PATENT OFFICE.

IVILLIAM A. REID AND EDWARD J. HANLEY, OF ST. LOUIS, MISSOURI,

ASSIGNORS TO N. O. NELSON MANUFACTURING COMPANY, OF ST.

LOUIS, MISSOURI.

SEPTIC SEWER SYSTEM.

SPECIFICATION forming part of Letters Patent No. 778,506, dated December 27, 1904.

Application filed July 23, 1904. Serial No. 217,761.

To u/ZZ 707mm/ t muy concern:

Be it known that we, VVILLTAM A. REID and EDWARD J. HANLEY, citizens of the United States, residing at St. Louis, State of Missouri, have invented certain new and useful Improvements in Septic Sewer Systems, of which the following is a specication containing a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

Our invention relates to improvements in septic sewer systems; and it consists of the novel features herein shown, described, and claimed.

In the drawings, Figure 1 is a plan view in the nature of a diagram of a piece of septic sewer system embodying the principles of our invention. Fig. 2 is a sectional elevation on the line 2 2 of Fig. 1.- Fig. 3 is an enlarged sectional detail on the line 3 3 of Fig. 1. Fig. 4 is an enlarged sectional detail on the line 4 4 of Fig. 1. Fig. 5 is an enlarged sectional detail on the line 5 5 of Fig. 1. Fig. 6 is a cross-section of the outlet-Weir and taken on the lines 6 6 of Figs. 1 and 7. Fig. 7 is a top plan view of one section of the outlet-weir as seen looking' in the direction indicated by the arrow 7 in Fig. 6. Fig. 8 is a front elevation showing the connection between two sections of the outlet-Weir as seen looking in the direction indicated by the arrow 8 in Fig. 7 Fig. 9 isa sectional detail of thc inlet-weil and taken on the lines 9 9 of Figs. 1 and lO.` Fig. 10 is a front elevation of the inlet-Weir as seen looking in the direction indicated by the arrow 10 in Fig. 9.

Referring' to the drawings in detail, the pipe represents the storm-sewer. The septicsewer basin 21 is built at one side of the stormsewer 20, and the chamber 22 of the basin is entirely inclosed, said chamber being divided crosswise by the underflm` 7-walls 23,24, and 25, thus forming the inlet-pool 26,the purificationpools 27 and 28, and the outlet-pool 29. The basin 21 is divided longitudinally by the wall 30, so that one-third (s) of the basin is on one side of the wall and two-thirds of the basin on the other side of the wall. Manlioles i 31 provide access through the top of the ba- A pipe` holes 34 to the grit-chamber 32, and a pipe Y 35 leads from the grit-chamber to one part of the basin, and a similar pipe 36 leads from the grit-chamber to the other part of the basin, said pipes 35 and 36 being controlled by flapvalves 37.

The bottom 38 of the grit-chamber 32 is considerably below the inlet and outlet pipes and forms a trap to catch the grit and other solid material. The pipes 35 and 36 discharge into the basin through inlet-weirs 39, and in passing through these weirs the water falls over a flat level edge 40 in athin sheet. The water passes out of the basin through the out- 'let-weirs 41, and-the pipes 42 and 43 lead from the outlet-weirs back to the storm-sewer. The outlet-weirs are constructed as shown in Figs. 6, 7, and 8, and comprise a semi-circular trough 44 constructed in sections, there being flanges 45 and 46 at the ends of the sections, said flanges being secured together by bolts 47. The ends of the trough abut against the walls of the basin and are closed. A ledge 48 extends horizontally from the inner edge of the trough 44, and a flange 49 extends vertically from the inner edge of the ledge. Pipenipples 50 lead from the trough 44 outwardly through the wall and connect with the pipes 42 and 43. In passing outwardlyfrom the basin the water must flow over the flange 49, fall downwardly upon the ledge48, and then pass through the trough 44 and outwardly through the nipples-50. A sludge-well 51 is located at one side of the basin, and sludgepockets 52 and 53 are formed in the bottom of the basin, one in each chamber. Sludgepipes 54 and 55 vlead from the sludge-pockets 52 and 53 to the sludge-well 51, said pipes being independently-controlled by valves 56.

The bottoms of the chambers of the basin are constructed to lead the sludge from all parts of the chamber to the pockets 52 and 53, either by sloping the bottoms toward said pockets or by constructing grooves 57 in said bottoms leading toward said pockets, or in any suitable manner.

A flush-pipe 58 leads from the grit-ch amber 32 and discharges into the sludge-well 5l, said pipe being controlled by a valve 59, and a drain-pipeO leads from the sludge-well to the storm-sewer. Several manholes 31 provide access to the basin 21, as before suggested, and a similar manhole provides access to the grit-chamber 32, another to the stor1nsewer manhole 34, and another to the sludgewell 5l.

` ln the operation of our septic sewer s vstem the Hoods caused by storms will pass through the main or storm sewer 20, but in the dry-weather season, when there is no iood, the sewage will pass into the septic basin 2l, said sewage being controlled by valves in the manhole 34 and by valves in the gritchamber 82. If the sewage system is new and only a small amount of sewage is to be disposed oi', it will be passed into the smaller part of the basin, and as the use of the sewer system increases the valves may be changed to pass the sewage into the larger part of the basin, and as the use of the sewer system still further increases both of the pipes 35 and 36 may be opened to use the entire basin. The sewage passes into the basin through the inlet-weirs 39, being discharged into the inlet-pool 26 over the fiat edge 40, and by said edge is spread out into a thin sheet and falls quietly into the pool, so as to make the least possible disturbance within the basin. As soon as the impurities in the sewage begin to decompose the solid mineral matter will be precipitated upon the bottom of the basin, and by said bottom will be conducted to the sludge-pockets 52 and 53, and the vegetable matter and animal matter will rise to the top and form a bacterial mat or scum on the top of the water. In the puritication-pools 27 and 28 this scum may remain indefinitely without any disturbance, and the decomposition will purify the water and the water will be discharged through the outlet-weirs back to the sewer. The water passes under the walls 23, 24, and 25, thus leaving the surface of the water undisturbed.

Vhen it is desired to clean the sludge out of the basin, the valves 56 are opened and the weight ot' the water will force the sludge through the pipes 54 and 55 into the sludgewell 51. Then the valve 59 is opened and water will rush from the grit-chamber through the pipe 58 into the sludge-well and dissolve the sludge and wash it out through the drainpipe 60. rThis manner of disposing ot' the sludge is very simple, effective, and important.

Traps 72 are inserted into the pipes 35, 36, 42, and 43, the object of said traps being to trap the gas in the basin, thereby increasing the temperature and hastening the puriication of the sewage.

l. In a septic sewer system: a storm-sewer; a septic basin beside the storm-sewer; means of leading the dry-weather sewage from the storm-sewer to the septic basin; an outlet from the septic basin leading` back to the stormsewer; a sludge-well in connection with the septic basin; means of leading the sludge from the basin to the sludge-well; and means of iiushing the sludge well; substantially as specilied.

2. 1n a septic sewer system: a septic basin divided into unequal parts; a storm sewer; means of leading the sewage from the stormsewer to either of the parts of the septic basin; an outlet from the septic basin parts; underflow-walls in the septic basin; and manholes providing access to the septic basin parts; substantially as speeilied.

3. In a septic sewer system: a suitable septic basin; an inlet-weil1 discharging into one side of the basin; a connection between the storm-sewer and the inlet-Weir; an outlet-Weir leading from the opposite side oi' the basin; a connection between the outlet-Weir and the storm-sewer; and underflow-walls in said basin between the inlet-weil' and the outlet-Weir; substantially as specified.

4. In a septic sewer system: a storm-sewer; a suitable septic basin; an inlet-weir discharging into one side of the basin; a connection between the storm-sewer and the inlet-weir; a trap in said connection; an outlet-Weir leading from the opposite side of the basin; a connection between the outlet-weil and the stormsewer; a trap in said connection; and underflow-walls in said basin between the inlet-weir and the outlet-Weir; substantially as speciiied.

1n testimony whereof we have signed our names to this specification in presence of two subscribing witnesses.

VVlLLIAM A. REID. EDWARD J. HANLEY. lVitnesses:

ALFRED A. Eioiis, S. WELLs.

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